What direct equation relates x and y if y varies directly with x and $y=30$ when $x=3$ ?

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What direct equation relates x and y if y varies directly with x and $y=30$ when $x=3$ ?

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Answer 1 · 2018-03-27T09:25:15

$y=10x$

Explanation:

$"the initial statement is "ypropx$

$"to convert to an equation multiply by k the constant"$
$"of variation"$

$rArry=kx$

$"to find k use the given condition"$

$y=30" when "x=3$

$y=kxrArrk=y/x=30/3=10$

$"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=10x)color(white)(2/2)|)))$

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What direct equation relates x and y if y varies directly with x and $y=30$ when $x=3$ ?

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What direct equation relates x and y if y varies directly with x and y=30y=30 when x=3x=3?

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Explanation:

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What direct equation relates x and y if y varies directly with x and $y=30$ when $x=3$ ?